Much of companion planting is based on observation and folklore. But a few studies have shown limited positive effects, such as using collards to ... a pollinator magnet. Green lacewings also ...

“But as varied as they are above ground, they're also doing some really cool things below ground,” said Antonio Brazelton, a plant scientist who studies the roots of collard greens. A Ph.D. candidate ...

DeZha Smith, at 21-year-old farmer from north St. Louis, surveys dozens of collard green plants at the Jackie Joyner-Kersee Center in East St. Louis, Ill. The plants are part of a study examining ...